机械5

连接片冲压成形工艺及模具设计 摘要 本文针对支架弯曲件的冲裁工艺性，分析比较了成形过程中的三种不同冲压工艺（例如单工序、复合工序与连续工序）确定用一幅正装式复合模完成冲孔、落料工序的过程。本文介绍了连接片制件冷冲压的成形过程，经过对连接片的批量生产、零件质量、零件结构以及使用要求的分析和研究，按照不降低使用性能为前提，将其确定为冲压件，用冷冲压方法完成零件的加工，并且简要分析了形状、尺寸，以及排样、裁板方案，冲压工序的性质、数目和顺序等，并进行了冲裁力、压力中心、模具工作部分尺寸及公差的计算，并设计出模具的结构。同时具体分析了模具的主要零部件（如冲孔凸模、落料凸模、固定卸料装置、垫板、凸模固定板等）的设计与制造，冲压设备的选用，凸凹模间隙调整和编制一个重要零件的加工工艺过程。列出了模具所需零部件，并给出了合理的装配图。充分利用现代模具制造技术对传统机械零件进行了结构改进、优化设计、优化工艺方法，能大幅度提高生产效率，该方法对类似产品具有一定的借鉴作用。 关键词：固定卸料装置，正装复合模，冲孔落料 Bracket Pu
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n Abstract Accordi
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ng process of the ste
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nalyses a
nd compares three differe
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ngle processes,complexprocesses a
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ne the process usi
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ntroduces the frame be
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nd the bla
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nalyzes the mold of the mai
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nts(such as pu
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n importa
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nd die gap adjustme
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nd establishme
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n mold ma
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nologywere improved,optimizatio
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n greatlyimprove the productio
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ncy,this method has certai
n refere
nce to similar products. KeyWords：fixed u
nloadi
ng device,mold desig
n,progressive die,pu
nchi
ng a
nd bla
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ng. 目录 1绪论1 1.1冲压模具在国民生活中的应用1 2冲压工艺分析3 2.1材料分析3 2.2尺寸精度分析3 3主要设计计算4 3.1制定工艺方案4 3.2排样设计4 3.3压力中心确定6 3.4冲压力的计算6 3.5初选冲压设备6 4工作部分尺寸计算9 4.1冲孔凸模尺寸计算10 4.2落料凹模尺寸计算10 5冲压模具的设计10 5.1模具类型的选择10 5.2定位方式的选择11 5.3卸料、出件方式的选择11 5.4导向方式的选择11 6主要零部件的结构设计12 6.1工作零件的结构设计12 6.2定位零件的设计15 6.3卸料机构的设计16 7成型设备及模具相关校核16 8模架选用及模具总装图绘制17 9模具的装配20 9.1模具的装配21 9.2模具的调试22 总结23 致谢24 参考文献25